additional_knots = []
regularization_penalty = 6
xtol = .1
ftol = 1e-4
pieces = 100
knots = 8
minimum = 1e-4
maximum = 1e4
spline = "piecewise"
cores = None
perplexity_threshold = .5
minimum_population_size = 1e-3
maximum_population_size = 1e3
